Lifting system for a harvester with a pivotable cylinder

Abstract

An agricultural machine includes a first cutting or collection system, a height-adjustable feeder connected to the first cutting or collection system; and a hydraulic lifting device connected to the feeder. The hydraulic lifting device includes a pivotable element carried by the machine; a beam-shaped element hingedly connected at one end to the feeder and at the other end to the pivotable element; and a cylinder hingedly connected at one end to the beam-shaped element and at the other end to the pivotable element such that extension of the cylinder causes the pivotable element to pivot and a height of the feeder to change.

The invention claimed is: 
     
       1. An agricultural machine, comprising:
 a first cutting or collection system; 
 a height-adjustable feeder connected to said first cutting or collection system; and 
 a hydraulic lifting device connected to said feeder, said hydraulic lifting device including:
 a pivotable element carried by said machine; 
 a beam-shaped element hingedly connected at one end to said feeder and at the other end to said pivotable element; and 
 a cylinder hingedly connected at one end to said beam-shaped element and at the other end to said pivotable element such that extension of said cylinder causes said pivotable element to pivot and a height of said feeder to change. 
 
 
     
     
       2. The agricultural machine according to  claim 1 , wherein said pivotable element is a bracket hingedly connected to said machine at a bracket hinge point. 
     
     
       3. The agricultural machine according to  claim 2 , wherein said cylinder hingedly connects to said bracket at a cylinder hinge point which is above said bracket hinge point. 
     
     
       4. The agricultural machine according to  claim 3 , wherein said beam-shaped element hingedly connects to said bracket at a beam hinge point which is above said cylinder hinge point. 
     
     
       5. The agricultural machine according to  claim 2 , wherein said feeder has a lowest position and a highest position, a top of said bracket tilting backwards when said feeder is in said lowest position and tilting forward when said feeder is in said highest position. 
     
     
       6. The agricultural machine according to  claim 1 , wherein said beam-shaped element has a protuberance which points away from said feeder, said cylinder being hingedly connected to said protuberance. 
     
     
       7. The agricultural machine according to  claim 1 , wherein said cylinder is hingedly connected to said beam-shaped element at a middle of said beam-shaped element. 
     
     
       8. The agricultural machine according to  claim 1 , wherein a front side of said feeder is connected to said first cutting or collection system and an additional cutting or collection system is fastened to a rear side of said first cutting or collection system. 
     
     
       9. The agricultural machine according to  claim 8 , wherein said first cutting or collection system includes a header.